Growing up in Northern Ontario I had the occasion to meet many former German POW's who immigated to Canada after being repatriated to Germany. Ironically, many came back to very locations where they were imprisoned. I have now seen estimates that as many as 25% of the 40,000 POW's held here from 1940-1945 eventually returned as immigrants after the war.
We have our share here in Alberta, if they don't/didn't come back to start a new life they would make regular trips to the areas they were held captive. We have about 3-4 prison camps here, most of them have been destroyed due to lack of care. You might be interested in this, Tag: 1939-1945 (en) - NFB They have a few documentaries on interred civilians and some footage of German veterans who came back to visit Camp 30 near Medicine Hat IIRC. I guess the government of Alberta finds it more convinent to accommodate the oil companies than preserve our heritage. =/
There are two Ex German PoW's who live near my parents on the Kent Coast...I'm trying to arrange a chat with one or both. They both stayed/came back after the war and married English girls I believe.